I have worn hemp clothing on flights and never had an issue, If the wraps are like clothing take it in a carry on. Or if you are still questioning this you can call the toll free TSA number.
I would check to see if I can buy them where your going to avoid any questions at the airport, they seem to make up the rules as they go.
No clue on this. My question would be state specific legislation on this. I would recommend contacting the Transportation Safety Administration.
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